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Sixteen bare green DDR5 RDIMM modules in a row

NEMIX RAM

NEMIX RAM DDR5 256GB 16x16GB 4800MHz CL40 1.1V ECC Registered RDIMM 288-Pin Supermicro H14SST-G memory upgrade

SKU CH-YNZY-R8TY8

A 256 GB DDR5 registered ECC server memory kit of sixteen 16 GB RDIMMs running at 4800 MHz CL40 1.1 V, validated for the Supermicro H14SST-G motherboard

  • Total capacity256 GB (16 × 16 GB)
  • Rated speedDDR5 4800 (PC5 38400)
  • ChipsetMajor OEM Samsung, Micron, Hynix
  • CAS latencyCL40
  • Rated voltage1.1 V
  • Buffer typeRegistered

Size 256GB 16X16GB

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  • 256 GB total capacity from 16 matched 16 GB modules
  • DDR5-4800 speed with CL40 latency for rated server throughput
  • Registered ECC architecture offloads the controller and corrects single-bit errors
  • 1 V operation at 1Rx8 rank exactly as the H14SST-G expects
  • 288-pin RDIMM form factor verified for full-population stability

Supermicro H14SST-G DDR5 RDIMM Kit

This 256GB kit contains sixteen 16GB DDR5-4800 registered ECC modules built to the exact rank, voltage and timing the Supermicro H14SST-G motherboard expects. It is for administrators who need a validated, full-capacity upgrade without manual tuning.

1Rx8 Registered ECC at 1.1V

Each module runs at CL40 with a 1Rx8 organisation, so all sixteen slots can be populated at the rated 4800 MT/s while the registered buffer reduces electrical load on the memory controller. ECC corrects single-bit errors on the fly, protecting production workloads from silent data corruption.

Replaces Mismatched or Partial Kits

The jump is worth it when a server currently runs mixed-capacity DIMMs, operates below the board's maximum supported population, or uses unbuffered memory that cannot fill every slot. It is not for systems that require UDIMM or SODIMM form factors, nor for boards limited to lower maximum capacities.

How it compares

Measured against everything we stock in Model-Specific Memory Upgrades, at today’s prices. Recalculated every night.

Price $7,498.99
Pricier than about 84% of the 21,161 comparable items (median $397.99).
Total capacity 256 GB (16 × 16 GB)
Higher than about 80% of the 20,941 comparable items (median 32 GB).
Price per GB $29.29 per GB
Pricier than about 83% of the 20,941 comparable items (median $8.19 per GB).

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Specifications

Product
Brand nameNEMIX RAM
Product lineNEMIX RAM Original Series Server Memory
Model nameDDR5 ECC RDIMM Registered Server Memory
Part numberMR38400-618K16
Total capacity256 GB (16 × 16 GB)
Product type288-Pin DDR5 RDIMM
Performance
Rated speedDDR5 4800 (PC5 38400)
Processor
ChipsetMajor OEM Samsung, Micron, Hynix
Memory
CAS latencyCL40
ECC supportYes
Buffer typeRegistered
Memory rank1Rx8
Heat spreaderNo
Power
Rated voltage1.1 V
Compatibility
Compatible systemsSupermicro
In the box
Included items256 GB 16 × 16 GB DDR5 4800 MHz PC5-38400 1Rx8 1.1 V 288-PIN ECC RDIMM KIT

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Questions about this item

Will this 16-module DDR5 kit run alongside any existing RDIMMs already installed in my Supermicro H14SST-G?

Mixing ranks, speeds or vendors can prevent the system from training at 4800 MT/s; the manufacturer recommends populating all slots with this identical 1Rx8 kit for guaranteed operation.

How can I confirm the 256 GB kit is running at its rated 4800 MT/s and CL40 after installation?

Enter the system BIOS or UEFI and check the memory information screen — it should report DDR5-4800, CAS latency 40 and 1.1 V across all sixteen modules.

What exactly ships in the box and is anything else required to install it?

The package contains the 16 x 16 GB DDR5 RDIMM modules only; no heat spreaders, cables or tools are included, and the motherboard manual lists any required torque or seating procedures.

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